Radar damaged (Collision Detection Risk fault) after collision

Hello all,

After an unfortunate high-speed meeting with a badger, I have a "Collision Detection Risk System Fault" present on the dashboard. The cover has popped off the front of the radar and I suspect it has been damaged.

Questions...

1) As the front cover popped off the bumper, I'm assuming the fault is with the radar unit itself that suffered a hit.
2) If I simply buy a replacement, can I just fit it, or will it need calibrating again at Peugeot?

Thanks in advance.